
//index.js

//获取应用实例

var app = getApp()

Page({

  data: {
    showModal: false,

    circleList: [],//圆点数组

    awardList: [],//奖品数组

    colorCircleFirst: '#FFDF2F',//圆点颜色1

    colorCircleSecond: '#FE4D32',//圆点颜色2

    colorAwardDefault: '#F5F0FC',//奖品默认颜色

    colorAwardSelect: '#ffe400',//奖品选中颜色

    indexSelect: 0,//被选中的奖品index

    isRunning: false,//是否正在抽奖

    imageAward: [

      '../../images/1.jpg',

      '../../images/2.jpg',

      '../../images/3.jpg',

      '../../images/4.jpg',

      '../../images/5.jpg',

      '../../images/6.jpg',

      '../../images/7.jpg',

      '../../images/8.jpg',

    ],//奖品图片数组

  },

  btn: function () {
    this.setData({
      showModal: true
    })
  },

  // 禁止屏幕滚动
  preventTouchMove: function () {
  },

  // 弹出层里面的弹窗
  ok: function () {
    this.setData({
      showModal: false
    })
  },

  onLoad: function () {

    var _this = this;

    //圆点设置

    var leftCircle = 7.5;

    var topCircle = 7.5;

    var circleList = [];

    for (var i = 0; i < 24; i++) {

      if (i == 0) {

        topCircle = 15;

        leftCircle = 15;

      } else if (i < 6) {

        topCircle = 7.5;

        leftCircle = leftCircle + 102.5;

      } else if (i == 6) {

        topCircle = 15

        leftCircle = 620;

      } else if (i < 12) {

        topCircle = topCircle + 94;

        leftCircle = 620;

      } else if (i == 12) {

        topCircle = 565;

        leftCircle = 620;

      } else if (i < 18) {

        topCircle = 570;

        leftCircle = leftCircle - 102.5;

      } else if (i == 18) {

        topCircle = 565;

        leftCircle = 15;

      } else if (i < 24) {

        topCircle = topCircle - 94;

        leftCircle = 7.5;

      } else {

        return

      }

      circleList.push({ topCircle: topCircle, leftCircle: leftCircle });

    }

    this.setData({

      circleList: circleList

    })



    //圆点闪烁

    setInterval(function () {

      if (_this.data.colorCircleFirst == '#FFDF2F') {

        _this.setData({

          colorCircleFirst: '#FE4D32',

          colorCircleSecond: '#FFDF2F',

        })

      } else {

        _this.setData({

          colorCircleFirst: '#FFDF2F',

          colorCircleSecond: '#FE4D32',

        })

      }

    }, 500)//设置圆点闪烁的效果



    //奖品item设置

    var awardList = [];

    //间距,怎么顺眼怎么设置吧.

    var topAward = 25;

    var leftAward = 25;

    for (var j = 0; j < 8; j++) {

      if (j == 0) {

        topAward = 25;

        leftAward = 25;

      } else if (j < 3) {

        topAward = topAward;

        //166.6666是宽.15是间距.下同

        leftAward = leftAward + 166.6666 + 15;

      } else if (j < 5) {

        leftAward = leftAward;

        //150是高,15是间距,下同

        topAward = topAward + 150 + 15;

      } else if (j < 7) {

        leftAward = leftAward - 166.6666 - 15;

        topAward = topAward;

      } else if (j < 8) {

        leftAward = leftAward;

        topAward = topAward - 150 - 15;

      }

      var imageAward = this.data.imageAward[j];

      awardList.push({ topAward: topAward, leftAward: leftAward, imageAward: imageAward });

    }

    this.setData({

      awardList: awardList

    })

  },



  //开始抽奖

  startGame: function () {

    if (this.data.isRunning) return

    this.setData({

      isRunning: true

    })

    var _this = this;

    var indexSelect = 0

    var i = 0;

    var timer = setInterval(function () {

      indexSelect++;

      //这里我只是简单粗暴用y=30*x+200函数做的处理.可根据自己的需求改变转盘速度

      i += 30;

      if (i > 1000) {

        //去除循环

        clearInterval(timer)

        //获奖提示



        wx.showModal({

          title: '恭喜您',

          content: '获得了第' + (_this.data.indexSelect + 1) + "个优惠券",

          showCancel: false,//去掉取消按钮

          success: function (res) {

            if (res.confirm) {

              _this.setData({

                isRunning: false

              })

            }

          }

        })

      }

      indexSelect = indexSelect % 8;

      _this.setData({

        indexSelect: indexSelect

      })

    }, (200 + i))

  }

})
